Tomcat 7: How to set initial heap size correctly?

user_714918 0
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I was trying to adjust initial heap size of a tomcat 7 (CentOS, java -version: 1.6.0_25-b06) instance by adding the following line to catalina.sh:

export CATALINA_OPTS="-Xms=512M -Xmx=1024M"

Starting up tomcat fails and logs the following message to catalina.out:

Invalid initial heap size: -Xms=512m
Could not create the Java virtual machine.

What is wrong with these options?

tomcat7 heap-memory linux java
10 Answers

You might no need to having export, just add this line in catalina.sh :

CATALINA_OPTS="-Xms512M -Xmx1024M"
user_16765870

If it's not work in your centos 7 machine "export CATALINA_OPTS="-Xms512M -Xmx1024M"" then you can change heap memory from vi /etc/systemd/system/tomcat.service file then this value shown in your tomcat by help of ps -ef|grep tomcat.

user_72663210
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